Braiding and coating mechanism.



R. C. RAHM & T. V. WILSON.

BRAIDING AND COATING MECHANISM.

APPLICATION FILED SEPT-21. m2.

1,294,065. Patented Nov. 7, 1916. r

a fiabart AZEa/m 77501 755 Y 14/275277 6 Hot $121 TED SATE PATNT @FFTQE.

ROBERT C. RAHM AND 'rnonms v. wrrson, or wyomssrne BOROUGH, PENNSYL- V,ASSIGNORS TO TEXTILE MACHINE WORKS, F WYOIVIISSING, PENNSYL- VANIA, ACORPOTION OF PENNSYLVANIA.

BRAIDING AND COATING MECHANISM.

menses.

Specification of Illetters Patent.

Patented Nov. 3', 1916.

Application filed. September 21, 1912. Serial 0. 721,642.

Berks and State of Pennsylvania, have in vented certain new and usefulImprovements in Braiding and Coating Mechanism, of which the followingis a specification.

The object of our invention is to provide improved mechanism forcontinuously producing a coated textile product such as flexible tubingfor conveying gas, and it consists in combining with suitable textilemechanism for making tubular fabric cooperating means adapted tosimultaneously embody with the interlacing threads a coatingcomposition, as hereinafter fully described in connection with theaccompanying drawings illustrating a preferred embodiment of theinvention, the novel features being specifically pointed out in theclaims. Figure 1 is a plan View of a braiding machine having ourinvention applied thereto in preferred manner. Fig. 2 is a frontelevation of the same. Fig. '3 is a sectional elevation on the lines 3-3of Figs. 1 and 2. Fig. 4 is an enlarged sectional view of thecomposition cup and cooperating braiding mandrel. Fig. 5 is a separateview of the composite tubingproduced, part of it being shown in sectionwith the tubular braiding indicated in dotted lines.

The drawings indicate a well-known type of tubular braiding machine suchas is preferably employed in carrying out the invention; 1 being the topplate, 2 the bottom plate, 8 the carrier drive gears, 4; the carrierrace-way in the top plate and 5Uthe yarn carriers traversing saidrace-way. lhe carriers are driven through the driveshaft 6 andcooperating drive gears 7, 8 and 9, in the usual manner. Above the topplate 1 a frame 10 is mountedon posts 11 and carries a receptacle 12.This receptacle is provided with an inner lining 13 spaced from thereceptacle wall so as to form a heating chamber 14: for a container 15set within the lining 13. A-heating medium, such as steam or hot water,is admitted to said chamber by a pipe 16 running to a source of supply,

andan exit pipe 17 provided for proper C11- culation of said heatingmeans. An outlet pipe .18 communicating with the container 15, passesthrough the .double walls of the receptacle and is provided with a valve19 to control the flow from said container. Centrally mounted above thetop plate, upon posts 25 is .a funnel-shaped cup 26, havmg a heatingjacket 27 surrounding the same with pipes 28 and 29 to supply theheating medium, and also with a bottom Opening 30 in 'alinement with theaxis of the braiding machine. The rounded top edge of the cup 26 ispreferably set above the tops of the yarn carriers 5, so that thebraiding yarn bends over this edge as shown.

Depending into the cup 26 is a mandrel 35, adgustably supported in abracket 36 fixed to the frame 10, the lower reduced end 37 of whichmandrel extends more or less into the bottom opening 30 of the cup 26.This withspray openings 38 in the end thereof for the passage of afluid, such as compressed air, through said mandrel. A coatingcomposition suitable for the purpose desired, which is plastic whenheated and solidifies when cooled, is placed in the jacketed receptacle12 and a regulated flow of said coating material is supplied to thecomposition cup- 26 through the valved outlet pipe 18. The braidingthreads or yarn are carried from the carriers 5 over the edge of the cup26 and pass through the coating ma terial contained therein, to theoutlet 30, the tubular braid thus formed being made over; the reducedend 37 of mandrel 35. The braiding point of the tubular fabric is at apoint on this mandrel regulated mainly by the speed of the take-01fmechanism. This take-off mechanism, indicated at 4.0, is of anywell-known construction and is located below the bed-plate 2 of themachine, preferably a considerable distance below, so as to allow timefor'the coated fabrio produced to sufliciently harden. The winding reel,not shown, may be placed on the same level with the machine and to oneside thereof or at any convenient point. The tubular fabric thus formedis coated inside and outside with the plastic material, the threadsthereof being individually covered by the coating material in the cup 26before beinginterwoven, and being finally embedded in a coherent mass ofthe covering material as indicated in Fig. 5. To insure the freeslippage of the formed tube from the mandrel is preferably hollow andprovided mandrel 35 spray openings 38 may be provided therein so that acompressed fluid, such as air, may be forced through the hollow mandrelstem and said spray openings to loosen the plastic material from saidmandrel. The size of the opening 30 of the cup, and the reduced end 370f the mandrel determine the outside and inside diameters of the formedtube. The mechanism employed for interlacing the threads may be variedin construction as known in the art Without departing from the essentialfeatures of the invention.

What We claim is 1. The combination with mechanism for making tubularfabric comprising revolving thread carriers and a take-off, of acentrally located composition cup having a cylindrical bottom opening,and fixed braiding mandrel having a reduced end portion located in saidbottom opening and forming a braiding-point and an annularfabric-and-composition passage Way; the braiding threads being passedthrough the composition cup to the braiding point and the annularpassage Way being adapted to permit the passage of the tubularly braidedfabric in connection with a determined coating portion of thecomposition.

2. The combination with mechanism for making tubular fabric comprisingrevolving thread carriers and a take-oil, of a centrally locatedcomposition cup having a cylindrical bottom opening, and an adjustablyfixed braiding mandrel having a reduced end portion located in saidbottom opening and forming a braiding-point and an annularfabric-and-composition passage Way; the braiding threads being passedthrough the composition cup to the braiding point and the annularpassageway being adapted to permit the passage of the tubularly braidedfabric in connection with a determined coating portion of thecomposition.

In testimony whereof, We afiix our signatures, in the presence oftwoWitnesses.

ROBERT C. RAHM. THOS V. WILSON.

Witnesses:

D. M. STEWART, W. G. STEWART.

